React涓浣曞悎鐞嗗簲鐢╟leartimeout
鍦≧eact涓悎鐞嗗簲鐢╟leartimeout涓昏鏄负浜嗘竻闄や箣鍓嶈缃殑瀹氭椂鍣紝閬垮厤鍑虹幇鍐呭瓨娉勬紡鎴栬€呮剰澶栫殑鍓綔鐢ㄣ€備笅闈㈡槸涓€涓畝鍗曠殑绀轰緥锛屾紨绀哄浣曞湪React缁勪欢涓悎鐞嗗簲鐢╟leartimeout锛?/p>
import React, { useState, useEffect } from 'react';
const TimerComponent = () => {
const [count, setCount] = useState(0);
useEffect(() => {
const timer = setTimeout(() => {
setCount(count + 1);
}, 1000);
return () => {
clearTimeout(timer);
};
}, [count]);
return (
<div>
<h1>Timer: {count}</h1>
<button onClick={() => setCount(0)}>Reset Timer</button>
</div>
);
};
export default TimerComponent;
鍦ㄤ笂闈㈢殑绀轰緥涓紝鎴戜滑浣跨敤浜唘seState鏉ヤ繚瀛樿鏃跺櫒鐨勫綋鍓嶅€硷紝骞跺湪useEffect涓缃簡涓€涓畾鏃跺櫒锛屾瘡闅?绉掓洿鏂拌鏃跺櫒鐨勫€笺€傚湪杩斿洖鐨勫嚱鏁颁腑锛屾垜浠娇鐢ㄤ簡clearTimeout鏉ユ竻闄や箣鍓嶈缃殑瀹氭椂鍣紝纭繚鍦ㄧ粍浠跺嵏杞芥椂娓呴櫎瀹氭椂鍣紝閬垮厤鍐呭瓨娉勬紡銆?/p>
鍦≧eact涓悎鐞嗗簲鐢╟leartimeout鍙互甯姪鎴戜滑鏇村ソ鍦扮鐞嗗畾鏃跺櫒锛岄伩鍏嶅嚭鐜版剰澶栫殑闂锛屾彁楂樼粍浠剁殑鎬ц兘鍜屽彲闈犳€с€?/p>